The Theory of Love Evolution tells the story of Ai Ruoman and her friend Lu Fei, a successful new woman who has just entered the workplace but has no emotional vacancy. While waiting for each other, they re-recognize their abilities and grow up in their complicated lives.

Ai Ruoman, with good conditions, self-reliance and all the way forward, is an outstanding representative of modern urban new women, but she will not be favored by men from beginning to end, and was judged by her predecessor that no one dared to love her.

Luffy, gentle, frank, easy-going, sincere and indifferent, just want to be an ordinary person with 60 points. He loves cooking, cleaning, flowers and plants, and has a high relationship with the opposite sex. In love, the resume is vacant, and in marriage, you dare not cross the line.

They are all unmarried men and women in their thirties, all working hard in big cities. However, they don't want to run out of key years at the age of 30. They are all trying to evolve their best selves and start a stronger and more prosperous year.

They have known each other for 15 years, only after stumbling friendship did they see each other's intentions, and only after evolving their best selves did they finally have their own feelings.